filesaver
nounUK /ˈfaɪlˌseɪvə/
US /ˈfaɪlˌseɪvər/
A filesaver is a person or thing that keeps computer files safe.
The filesaver program backed up my homework before the computer shut down.
OTHER MEANINGS
2. A small tool or button that saves a document.
Click the filesaver icon to keep your story.
3. A person whose job is to store and protect important papers.
The filesaver at the office keeps every record in order.
4. A feature that automatically stores your work.
The game has a filesaver so you never lose your progress.